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SHA3-512 Hex Digest
x402
SHA3-512 Hex Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes a SHA3-512 cryptographic hash of input text and returns it as a hexadecimal-encoded string, with no network or LLM calls involved.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs a sha3-512 digest of text, encoded as hex. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex first.
Output
Returns a SHA3-512 digest of the submitted text encoded as a lowercase hexadecimal string (128 hex characters representing 512 bits). No external calls are made; the result is purely deterministic.
Example use cases
Content fingerprinting for deduplication
“I need to deduplicate articles before storing them — can you compute the SHA3-512 hex digest of this article text so I can use it as a unique fingerprint?”
Integrity verification before transmission
“Before I send this JSON payload over the wire, compute a SHA3-512 hex hash of it so the receiver can verify nothing was tampered with.”
Password hashing for audit log
“Hash this user password string with SHA3-512 and return the hex output so I can store it safely in the audit log.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha3-512-hex?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need SHA3-512 (Keccak-based, NIST standard) output in hexadecimal format. Prefer the free sandbox POST /v1/sandbox/digest-sha3-512-hex first; use this paid endpoint when the sandbox is unavailable or rate-limited. Choose this over SHA-2 variants when SHA3 is mandated by your security policy, and over base64-encoded siblings when hex output is required by the consuming system.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or invalid API key results in authentication failure
- Payment not settled via x402 protocol results in 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text. |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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